Different types of VARITOP® TTB switch modules are available for the Tank Safety System VARITOP®:
 
VARITOP® TTB switch module 11 / 12

• Automatic CIP / Gas changeover, without power supply 
• The switching module keeps the path open for aeration and degassing. The path to the cleaning devices is always open.
• When the cleaning supply goes to the rotating jet cleaner the switching module switches over automatically from 8 m3/h.
• When the cleaning supply goes to the cleaning lance the switching module switches over automatically from 15 m3/h.
• The path for aeration and degassing is then closed.
• The gas capacity is dependent on the pressure and is maximally 92 m3/h CO2 with an operating pressure of 2 bar ü. This can be converted to other process parameters.
• The switching module is also self-cleaning.

VARITOP® TTB switch module 21 / 22

• Pneumatic CIP / Gas changeover using an ECOVENT® shuttle valve type W_S with power supply 
• The switching module keeps the path open for the aeration and degassing. The path to the cleaning devices is closed.
• The switching of the paths happens pneumatically.
• Then the path to the cleaning devices is open and the aeration and degassing paths are closed.
• The switching module is most suitable for high gas currents.
• The shuttle valve type WKS can be individually configured from the VARIVENT® valve programme.
   

VARITOP® TTB switch module 31 / 32

• Gas pressure control using a VARIVENT® modulating control valve type A and type S (upon request) with power supply.  
• The switching module regulates the aeration and degassing independently from the operation and process parameters.
• The path to the cleaning devices via the VARIVENT® butterfly valve is closed.
• The switching of the paths happens pneumatically.
• Then the path to the cleaning devices is open and the aeration and degassing path is closed.
• The switching module is suitable for high gas currents.
• The modulating control valve can be individually configured from the VARIVENT® valve programme.
   

VARITOP TTB switch module 41 / 42

• Pneumatic CIP / Gas changeover using a butterfly valve combination with power supply. 
• The switching module keeps the path open for the aeration and degassing. The path to the cleaning devices is closed.
• The switching of the paths happens pneumatically.
• Then the path to the cleaning devices is open and the aeration and degassing paths are closed.
• The switching module is most suitable for high gas currents